5-chloro-2-methyl-[1,2,4]triazolo[1,5-a]pyrimidine CAS 1785622-28-7
| CAS No. | 1785622-28-7 |
| Molecular Formula | C6H5ClN4 |
| Molecular Weight | 168.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-chloro-2-methyl-[1,2,4]triazolo[1,5-a]pyrimidine (C6H5ClN4) contains a nitrile group, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
5-chloro-2-methyl-[1,2,4]triazolo[1,5-a]pyrimidine (CAS 1785622-28-7), molecular formula C6H5ClN4 and molecular weight 168.58 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C6H5ClN4 |
| Molecular Weight | 168.58 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
Related chloro Standards
- 6-Chloro-1H-pyrrolo[3,2-c]pyridin-2(3H)-one (CAS 1000342-80-2)
- 4-Chloro-2-methoxypyridine-3-carbonitrile (CAS 1008451-56-6)
- 6-Chloro-2-methyl-9H-purine (CAS 100859-35-6)
- 3-chloro-6-methyl-[1,2,4]triazolo[4,3-a]pyrimidine (CAS 1019033-24-9)
- 2-Chloro-8-methyl-9H-purine (CAS 1023813-16-2)
- 2-Chloro-5-methylfuro[2,3-d]pyrimidine (CAS 1030377-49-1)
- 7-chloro-5-methyl-1H-pyrazolo[4,3-d]pyrimidine (CAS 1055057-37-8)
- 2-Chloro-6-hydrazinylpyridine-4-carbonitrile (CAS 107445-56-7)
Recommended Standards
- 2-chloro-5-methyl-[1,2,4]triazolo[1,5-c]pyrimidine (CAS 1785622-14-1)
- 2-(4-Chloro-6-hydroxypyridin-3-yl)acetonitrile (CAS 1807200-08-3)
- 6-Chloro-2-methyloxazolo[4,5-b]pyridine (CAS 1785621-96-6)
- 3-Chloroimidazo[1,2-b]pyridazin-6-amine (CAS 1823338-74-4)
- n-(2,4-Dichlorobenzyl)naphthalen-1-amine (CAS 356531-71-0)
- 2-Chloro-n-(5-acetamido-2-methoxyphenyl)propanamide (CAS 1000930-64-2)
- (2S)-2-amino-N,N-diethyl-3-methyl-butanamide (CAS 56414-87-0)
- 3-[3-Acetyl-5-(4-methoxyphenyl)-2-methyl-1H-pyrrol-1-yl]propanoic acid (CAS 913837-62-4)
- 3-(tert-Butyl)-2-hydroxy-5-(4-pyridyl)benzaldehyde (CAS 342037-22-3)
- 1142200-00-7 2-(2-Mercapto-4-oxo-4,5-dihydro-1,3-thiazol-5-yl)-N-phenylacetamide (CAS 1142200-00-7)
- (2S,4S)-tert-butyl 4-(acetylthio)-2-((tert-butoxycarbonyl(sulfamoyl)amino)methyl)pyrrolidine-1-carboxylate (CAS 148017-43-0)
- 1-(Benzenesulfonyl)-6-chloro-2-iodo-1H-pyrrolo[3,2-c]pyridine (CAS 1227267-17-5)
- 1-[(1-aminopropan-2-yl)oxy]-3-methylbenzene (CAS 6440-88-6)
- Semaglutide impurity 47 (CAS CATO-C4X-222647)
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